Walkback in STS Project Editions browser

I had an Project Editions browser open in my image for a few day - but
haven't been doing any project stuff (e.g. didnt create or unload any).

I versioned a few packages and then flipped to that browser and got the
included walkback.

I managed to terminate the process, open a new project browser and it then
worked correctly.

12:59:21, 30 December 2005: 'UndefinedObject does not understand #holderAt:'
Object>>doesNotUnderstand:
ODBLocalTransaction(ODBTransaction)>>transactionObjectAt:
ODBDemandLoader>>getObject
ODBDemandLoader>>perform:withArguments:
ODBReference>>doesNotUnderstand:
IconicListAbstract class>>value:
MultipleSelectionListView(ListView)>>imageFromRow:
MultipleSelectionListView(ListView)>>onDisplayDetailsRequired:
MultipleSelectionListView(IconicListAbstract)>>nmGetDispInfo:
MultipleSelectionListView(ListView)>>nmNotify:
ContainerView(View)>>wmNotify:wParam:lParam:
ContainerView(View)>>dispatchMessage:wParam:lParam:
[] in InputState>>wndProc:message:wParam:lParam:cookie:
BlockClosure>>ifCurtailed:
ProcessorScheduler>>callback:evaluate:
InputState>>wndProc:message:wParam:lParam:cookie:
MultipleSelectionListView(ControlView)>>defaultWindowProcessing:wParam:lParam:
MultipleSelectionListView(ControlView)>>wmPaint:wParam:lParam:
MultipleSelectionListView(View)>>dispatchMessage:wParam:lParam:
[] in InputState>>wndProc:message:wParam:lParam:cookie:
BlockClosure>>ifCurtailed:
ProcessorScheduler>>callback:evaluate:
InputState>>wndProc:message:wParam:lParam:cookie:
WalkbackDialog(DialogView)>>defaultWindowProcessing:wParam:lParam:
WalkbackDialog(View)>>dispatchMessage:wParam:lParam:
[] in InputState>>wndProc:message:wParam:lParam:cookie:
BlockClosure>>ifCurtailed:
ProcessorScheduler>>callback:evaluate:
InputState>>wndProc:message:wParam:lParam:cookie:
WalkbackDialog(DialogView)>>defaultWindowProcessing:wParam:lParam:
WalkbackDialog(View)>>dispatchMessage:wParam:lParam:
[] in InputState>>wndProc:message:wParam:lParam:cookie:
BlockClosure>>ifCurtailed:
ProcessorScheduler>>callback:evaluate:
InputState>>wndProc:message:wParam:lParam:cookie:
InputState>>pumpMessage:
InputState>>loopWhile:
InputState>>mainLoop
[] in InputState>>forkMain
ExceptionHandler(ExceptionHandlerAbstract)>>markAndTry
[] in ExceptionHandler(ExceptionHandlerAbstract)>>try:
BlockClosure>>ifCurtailed:
BlockClosure>>ensure:
ExceptionHandler(ExceptionHandlerAbstract)>>try:
BlockClosure>>on:do:
[] in BlockClosure>>newProcess